/Engine/Plugins/Online/OnlineServices/Source/OnlineServicesInterface/Public/Online/Sessions.h
Creates a new session with the given parameters, and assigns to it the given local name. Depending on the implementation, the creating user might not be added to the Session Members automatically, so a subsequent call to AddSessionMember is recommended
[TOnlineAsyncOpHandle](API\Plugins\OnlineServicesInterface\Online\TOnlineAsyncOpHandle)< [FCreateSession](API\Plugins\OnlineServicesInterface\Online\FCreateSession) > CreateSession ( [FCreateSession::Params](API\Plugins\OnlineServicesInterface\Online\FCreateSession\Params) && Params )